IN-VEHICLE CHARGER

• US 20120086398A1
• Filed: 11/28/2011
• Published: 04/12/2012
• Est. Priority Date: 05/27/2009
• Status: Active Grant

• Current Assignee: BYD Company Limited
• Original Assignee: BYD Company Limited
• Inventors: Zhang, Jianhua, Luo, Hongbin, GUO, Bin
• Granted Patent: US 9,193,275 B2
• Time in Patent Office: Days
• US Class Current: 320/109
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

An in-vehicle charger of an electric vehicle or a hybrid electric vehicle is provided. The in-vehicle charger comprises: a rectification and voltage-stabilizing circuit, which inputs, rectifies and stabilizes a commercial power; a traction battery charging circuit, which is electrically connected with the rectification and voltage-stabilizing circuit, and which charges a traction battery; a control communication circuit, which is electrically connected with the rectification and voltage-stabilizing circuit, and which controls the traction battery charging circuit; and a starting battery charging circuit, which is electrically connected with the rectification and voltage-stabilizing circuit, and which starts charging of a starting battery under control of the control communication circuit.

Claims

1. An in-vehicle charger, comprising:

a rectification and voltage-stabilizing circuit, which inputs, rectifies, and stabilizes a commercial power;

a traction battery charging circuit, which is electrically connected with the rectification and voltage-stabilizing circuit, and which charges a traction battery;

a control communication circuit, which is electrically connected with the rectification and voltage-stabilizing circuit, and which controls the traction battery charging circuit; and

a starting battery charging circuit, which is electrically connected with the rectification and voltage-stabilizing circuit, and which starts charging of a starting battery under control of the control communication circuit.

2. The in-vehicle charger of claim 1, wherein the starting battery charging circuit includes a flyback topology circuit, a forward circuit, or a half-bridge topology circuit.

3. The in-vehicle charger of claim 2, wherein the starting battery charging circuit is a flyback-topology-type switching power supply circuit.

4. The in-vehicle charger of claim 3, wherein the traction battery charging circuit comprises a boost circuit and a buck circuit.

5. The in-vehicle charger of claim 4, wherein the rectification and voltage-stabilizing circuit is a power factor correction circuit.

6. The in-vehicle charger of claim 1, further comprising a heat dissipation module electrically connected with the rectification and voltage-stabilizing circuit.

12. The in-vehicle charger of claim 1, further comprising a heat dissipation module electrically connected with the rectification circuit.

7. An in-vehicle charger, comprising:

a rectification circuit;

a battery charging circuit electrically connected to the rectification circuit for charging a battery;

a control communication circuit electrically connected to the rectification for controlling the battery charging circuit; and

a starting battery charging circuit electrically connected with the rectification for starting charging of a starting battery under control of the control communication circuit.

8. The in-vehicle charger of claim 7, wherein the starting battery charging circuit includes a flyback topology circuit, a forward circuit, or a half-bridge topology circuit.

9. The in-vehicle charger of claim 8, wherein the starting battery charging circuit includes a switching power supply circuit.

10. The in-vehicle charger of claim 9, wherein the battery charging circuit comprises a boost circuit and a buck circuit.

11. The in-vehicle charger of claim 10, wherein the rectification circuit includes a power factor correction circuit.